نتایج جستجو برای: single crystal x ray diffractions

تعداد نتایج: 1592989  

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2013
Kui-Rong Ma Yu Zhang Yu-He Kan Hua-You Hu Ming-Hui Cong Yong-Jun Zhang

By introducing the second organic N-heterocyclic ligands 2,2'-bipyridine (2,2'-bipy)/1,10-phenanthroline (phen), two mono-/bi-nuclear examples of Cu(II)-diphosphonate coordination polymers based on 1-hydroxyethylidenediphosphonic acid (H5L=CH3C(OH)(PO3H2)2), [Cu(H4L)2(2,2'-bipy)]·H2O 1 and [Cu(H3L)(phen)]2·(HOCH2CH2OH)0.52, have been solvothermally obtained and characterized by powder X-ray dif...

The synthesis and single-crystal X-ray structure determination of the title compound (phen)Pb(02CMe) is described. The complex crystallizes in the monoclinic space group P2 /c, a = 7.823(3), b = 12.421(4), c = 9.262(2) ?, ? = 79.92(3)", Z = 4, yielding R 0.048 for 3210 independent reflections. The coordination number around the lead atom is six. [Pb-N 2.54(2), 2.56(4)],[Pb-0, 2.19-2.22]

آزادبخت , آزاده, دریکوند, زهره , عباسی , امیر رضا , مرسلی, علی ,

4-(4H-1,2,4-Triazol-4-yl)phenol (compound I) as a triazol aromatic compound was obtained by the reaction diformylhydrazineand p-aminophenol in dimethylformamide (DMF) under hydrothermal condition. The crystal structure of this compound was determined by FT-IR spectroscopy, NMR, elemental analysis and single crystal X-ray diffraction method. Crystallographic data for I was collected at 298 K. Th...

2015
Hyein Woo Eunyoung Jang Jin Kim Yunho Lee Jongsik Kim Tae-Soo You

Three quinary polar intermetallic compounds in the (Eu(1-x)Ca(x))9In8(Ge(1-y)Sn(y))8 (x = 0.66, y = 0.03) and the (Eu(1-x)Ca(x))3In(Ge(3-y)Sn(1+y)) (x = 0.66, 0.68; y = 0.13, 0.27) phases have been synthesized using the molten In-metal flux method, and the crystal structures are characterized by powder and single-crystal X-ray diffractions. Two orthorhombic structural types can be viewed as an ...

2013
YUN LUO JOHN RAKOVAN YUANZHI TANG MARIAN LUPULESCU JOHN M. HUGHES YUANMING PAN

Through the complementary use of single-crystal X-ray diffraction and X-ray absorption spectroscopy, we present in this paper the first direct results on the site occupancy of thorium in the fluorapatite structure and the structural distortion created by its substitution. Structure refinements based on single-crystal X-ray diffraction data from synthetic Th-doped fluorapatite indicates that Th ...

تجبر, ناصر,

Single crystals of CdTe were grown by the sublimation and condensation technique in a silica, under an argon gas now, and also by alloing cadmium tcJloride transport within an evacuated silica ampoule. X-ray powder diffraction patlerns prepared from each group of grown crys tals showed the crystal structure of the examined samples to be zinc-blend race-cent red cubic. Transmission electr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان 1390

ترکیبات کئوردیناسیون یا کمپلکس ها نقش بسیار مهمی در زندگی بشر دارند، که می توان کاربرد این ترکیبات را در فرایندهای بیولوژیکی، دارویی و پزشکی ملاحظه نمود. از ترکیبات آمیدی و کمپلکس های باز شیف به طور گسترده به-عنوان دارو در درمان سرطان و هپاتیت b استفاده شده است. در این تحقیق تعدادی از کمپلکس های باز شیف کبالت (+3) و لیگاندهای آمیدیn4 سنتز شده است. برای شناسایی این ترکیبات از تکنیک های ir، uv-v...

تجبر , ناصر, طباطبایی یزدی, شکوفه, علی نژاد , محمدرضا,

  Cd0.96Zn0.04Te crystals were grown using vapor phase gas transport method (VPGT). The results show that dendritic crystals with grain size up to 3.5 mm can be grown with this technique. X-ray diffraction and Laue back-reflection patterns show that dendritic crystals are single-phase, whose single crystal grains are randomly oriented with respect to the gas-transport axis. Electrical measureme...

I. Sheikhshoaie Z. Bagheri Z. Rashidi Ranjbar,

A novel complex of cadmium (II) [CdL0.5(NO3)(H2O)](1), L= N,N-bis (O-hydroxyacetophenone) ethylene diamine, have been synthesized as single crystal and nano size. Compound 1 in nano size was obtained under sonochemical irradiation and has been characterized by IR, 1HNMR spectroscopy, X-ray powder diffraction (XRD) and scanni...

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